123311322112 has 44 divisors (see below), whose sum is σ = 268911540576. Its totient is φ = 56050595840.

The previous prime is 123311322103. The next prime is 123311322133. The reversal of 123311322112 is 211223113321.

It is a tau number, because it is divible by the number of its divisors (44).

It is a super-2 number, since 2×123311322112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5462428 + ... + 5484955.

Almost surely, 2^123311322112 is an apocalyptic number.

It is an amenable number.

123311322112 is an abundant number, since it is smaller than the sum of its proper divisors (145600218464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123311322112 is a wasteful number, since it uses less digits than its factorization.

123311322112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10947414 (or 10947396 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 123311322112 its reverse (211223113321), we get a palindrome (334534435433).

The spelling of 123311322112 in words is "one hundred twenty-three billion, three hundred eleven million, three hundred twenty-two thousand, one hundred twelve".